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公开(公告)号：US5717133A
公开(公告)日：1998-02-10
申请号：US755046
申请日：1996-11-22
申请人： Zhijian James Wu , Anson Lee
发明人： Zhijian James Wu , Anson Lee
CPC分类号： G01M15/11
摘要： The present invention provides a method of detecting internal combustion engine misfiring. The method includes mixed rate sampling of crankshaft angular velocity for a plurality of cylinder firing events to generate a crankshaft angular velocity signal and a cylinder firing synchronization signal. The apparatus for executing the method comprises a crankshaft in operative relation with the internal combustion engine. A crankshaft sensor wheel is rotatably triggered by the crankshaft and includes a plurality of predetermined sensor indicators disposed at least at two different angular widths. A sensor is positioned adjacent to the wheel for sensing the passage of each indicator in producing a signal pulse having a duration corresponding to the angular width of the sensed indicator in response thereto. A counter determines the time intervals between signal pulses generated by the sensor including a synchronization signal time interval and an RPM signal time interval. The synchronization signal time interval is then utilized to calculate a plurality of crankshaft angular velocities for a plurality of RPM indicators replaced by a synchronization indicator. A misfire detector then determines if a misfire has occurred by interpreting a series of data points developed from the plurality of crankshaft angular velocities.
摘要翻译： 本发明提供一种检测内燃机失火的方法。 该方法包括用于多个气缸点火事件的曲轴角速度的混合速率采样以产生曲轴角速度信号和气缸点火同步信号。 用于执行该方法的装置包括与内燃机操作关系的曲轴。 曲轴传感器轮由曲轴可旋转地触发，并且包括至少设置在两个不同角度宽度的多个预定传感器指示器。 传感器邻近车轮定位，用于感测每个指示器的通过，以产生具有对应于所响应的指示器的角宽度的持续时间的信号脉冲。 计数器确定由传感器产生的信号脉冲之间的时间间隔，包括同步信号时间间隔和RPM信号时间间隔。 然后利用同步信号时间间隔来计算由同步指示符代替的多个RPM指示器的多个曲轴角速度。 然后，失火探测器通过解释从多个曲轴角速度产生的一系列数据点来确定是否发生了失火。
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公开(公告)号：US06978666B1
公开(公告)日：2005-12-27
申请号：US10935871
申请日：2004-09-08
申请人： Zhijian James Wu , Min Han , Anson Lee
发明人： Zhijian James Wu , Min Han , Anson Lee
CPC分类号： F02D41/1498 , F02D41/2432 , F02D41/28 , F02D2041/281 , G01M15/11
摘要： The present invention provides a method and system for systematically calibrating an engine misfire detection system for an internal combustion engine. The present invention provides a method of collecting a plurality of groups of sample data points. Each of the groups of sample data points represents a cylinder firing event. Optionally, misfire events can be induced during the collection of the groups of sample data points. Using the collected data points, a plurality of compensation parameters is then generated and applied iteratively to the sample data points to generally optimize the detection of misfire occurrences. Compensation parameters that produce a high accuracy misfire detection are selected and can be exported from the calibration system to transport to an engine controller in an internal combustion engine. Compensation of edge-to-edge error in engine speed data, engine noise, misfire signal magnitude, and filtering zone boundary coefficients enhance signal quality and further enhance misfire detection.
摘要翻译： 本发明提供一种用于系统地校准用于内燃机的发动机失火检测系统的方法和系统。 本发明提供一种收集多组样本数据点的方法。 样本数据点组中的每一组表示气缸点火事件。 可选地，在收集样本数据组组期间可以引起失火事件。 使用收集的数据点，然后生成多个补偿参数并迭代地应用于样本数据点，以通常优化失火事件的检测。 选择产生高精度失火检测的补偿参数，并可从校准系统输出到内燃机的发动机控制器。 发动机速度数据，发动机噪声，失火信号幅度和过滤区域边界系数的边缘到边缘误差的补偿可提高信号质量，进一步增强失火检测。
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公开(公告)号：US06314802B1
公开(公告)日：2001-11-13
申请号：US09361837
申请日：1999-07-27
申请人： Zhijian James Wu , Anson Lee
发明人： Zhijian James Wu , Anson Lee
IPC分类号： G01M1500
CPC分类号： G01M15/11 , F02B2075/184
摘要： The present invention provides a method and system for detecting engine misfire with an optimal compensation of the RPM signal in an internal combustion engine in which the data signal containing a plurality of groups of sample data points is generated. Each of the groups of sample data points represents a cylinder firing event. The data signal is then conditioned for misfire detection processing. The data engine cycle compensation vectors for the RPM zone is then multiplied to the sample data of the RPM. Each group of sample data points is processed using signal processing techniques and then mapped into a single mapped data point. The mapped data points are further processed and then compared to a misfire detection dynamic threshold. A misfire detection signal is then output if any of the mapped data points fall outside the dynamic threshold. The misfire detection system achieves high degree of accuracy through a signal processing and statistical detection technology. The on-line RPM signal compensation reduces the effects to misfire detection caused by the RPM error from various sources and it further enhances the detection performance.
摘要翻译： 本发明提供一种用于在内燃机中对RPM信号进行最佳补偿来检测发动机失火的方法和系统，其中产生包含多组采样数据点的数据信号。 样本数据点组中的每一组表示气缸点火事件。 然后对数据信号进行调节，用于失火检测处理。 然后将RPM区域的数据引擎循环补偿向量乘以RPM的样本数据。 使用信号处理技术处理每组样本数据点，然后映射到单个映射数据点。 映射的数据点被进一步处理，然后与失火检测动态阈值进行比较。 如果任何映射数据点落在动态阈值之外，则输出失火检测信号。 失火检测系统通过信号处理和统计检测技术实现了高精度。 在线RPM信号补偿降低了由各种来源的RPM错误引起的失火检测的影响，进一步提高了检测性能。
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4.发明授权Prediction of internal temperature of a battery using a non-linear dynamic model 有权使用非线性动态模型预测电池的内部温度
公开(公告)号：US6076964A
公开(公告)日：2000-06-20
申请号：US189552
申请日：1998-11-11
申请人： Zhijian James Wu , Gang Chen , Anson Lee , Kerry D. Franks , Timothy L. McDonald , James R. Tamm
发明人： Zhijian James Wu , Gang Chen , Anson Lee , Kerry D. Franks , Timothy L. McDonald , James R. Tamm
CPC分类号： H01M10/486 , G01K7/42
摘要： A method of determining a vehicle battery temperature by a non-linear dynamic model based on the physical concepts of thermal transfer and a system identification technique. The battery temperature model uses several available physical measurements from the vehicle, including the engine coolant temperature, surrounding air temperature, vehicle speed and the engine fan on/off state. This method also includes the estimation of an initial value of battery temperature before starting the iteration process by the battery temperature prediction from the dynamic model.
摘要翻译： 基于热传递的物理概念和系统识别技术的非线性动力学模型来确定车辆电池温度的方法。 电池温度模型使用来自车辆的几种可用物理测量，包括发动机冷却液温度，周围空气温度，车辆速度和发动机风扇开/关状态。 该方法还包括通过来自动态模型的电池温度预测开始迭代处理之前的电池温度的初始值的估计。
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5.发明授权Real-time misfire detection for automobile engines with medium data rate crankshaft sampling 有权具有中等数据速率曲轴采样的汽车发动机的实时失火检测
公开(公告)号：US6006155A
公开(公告)日：1999-12-21
申请号：US132872
申请日：1998-08-12
申请人： Zhijian James Wu , Anson Lee
发明人： Zhijian James Wu , Anson Lee
CPC分类号： G01M15/11 , F02D41/1498 , F02D2041/288 , F02D2200/1015 , F02D2250/12
摘要： A method and system for detecting engine misfire in an internal combustion engine. A data signal containing a plurality of groups of data points generated from sampling crankshaft rotational displacement over three pre-determined angular sampling windows; is generated. Each of the plurality of groups of sampled data points represents a cylinder firing event. The data signal is conditioned, and the plurality of groups of sampled data points are, mapped into single misfire data points. The mapped single misfire detection points are then compared to a misfire detection dynamic threshold, and a misfire detection signal is output if the misfire detection points fall outside the dynamic threshold. The misfire detection system achieves high degree of accuracy through a multi-stage signal conditioning, multi-rate signal processing and statistical decision technology and a mixed size of window sampling strategy, and is capable of being installed on a large scale in motor vehicles through use of existing on board automotive microcontroller technology.
摘要翻译： 一种用于检测内燃机中发动机失火的方法和系统。 数据信号，包含从三个预定角度采样窗口上取样曲轴旋转位移产生的多组数据点; 被生成。 多组采样数据点中的每一组表示气缸点火事件。 对数据信号进行调节，并将多组采样数据点映射到单个失火数据点。 然后将映射的单个失火检测点与失火检测动态阈值进行比较，并且如果失火检测点落在动态阈值之外，则输出失火检测信号。 失火检测系统通过多级信号调理，多速率信号处理和统计决策技术和窗口采样策略的混合大小实现了高度的准确性，并且能够通过使用大规模安装在机动车辆上 现有车载微控制器技术。
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公开(公告)号：US07032439B2
公开(公告)日：2006-04-25
申请号：US10660036
申请日：2003-09-11
申请人： Anson Lee , Zhijian James Wu
发明人： Anson Lee , Zhijian James Wu
IPC分类号： G01M15/00
CPC分类号： G01M15/11
摘要： A method of detecting misfire events in an engine uses system identification technology. A linear model is determined for estimating engine firing events based on engine speed fluctuations. The linear model is represented as a difference equation. A Kalman filter is applied to the difference equation to determine unknown parameters of the linear model. Misfire events in the engine are detected based on the linear model.
摘要翻译： 在发动机中检测失火事件的方法使用系统识别技术。 基于发动机速度波动来确定用于估计发动机起动事件的线性模型。 线性模型表示为差分方程。 将卡尔曼滤波器应用于差分方程以确定线性模型的未知参数。 基于线性模型检测引擎中的失火事件。
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7.发明授权Method of determining the engine charge temperature for fuel and spark control of an internal combustion engine 有权确定内燃机的燃料和火花控制的发动机充气温度的方法公开(公告)号：US06286366B1
公开(公告)日：2001-09-11
申请号：US09189719
申请日：1998-11-11
申请人： Gang Chen , Zhijian James Wu , Anson Lee , Kerry D. Franks , Timothy L. McDonald , James R. Tamm
发明人： Gang Chen , Zhijian James Wu , Anson Lee , Kerry D. Franks , Timothy L. McDonald , James R. Tamm
IPC分类号： G01L326
CPC分类号： F02D41/32 , F02D41/0065 , F02D2200/0406 , F02D2200/0414
摘要： A technique for determining the charge air temperature within an intake manifold of an internal combustion engine of a vehicle without using a dedicated temperature sensor. The technique includes identifying a non-linear dynamic model based on the physical concepts of thermal transfer and system identification technique. The charge air temperature model uses several available physical measurements from the vehicle, including inlet air temperature, engine coolant temperature, vehicle speed, manifold pressure, engine speed, exhaust gas recirculation condition, and the engine fan on/off state. The model parameters are determined based on specific vehicle characteristics, and collected data from the vehicle. The charge air temperature is predicted by the model at regular predetermined intervals from the physical measurements, the vehicle parameters and the charge air temperature from the previous time. An estimation of an initial charge air temperature when the vehicle is turned on can be obtained based on the available temperature sensor readings when vehicle is turned on and stored data of the charge temperature, and all the measured temperature readings just before the engine was turned off.
摘要翻译： 一种用于在不使用专用温度传感器的情况下确定车辆内燃机的进气歧管内的增压空气温度的技术。 该技术包括基于热传递和系统识别技术的物理概念识别非线性动态模型。 增压空气温度模型使用来自车辆的几种可用的物理测量，包括入口空气温度，发动机冷却剂温度，车辆速度，歧管压力，发动机速度，废气再循环状况和发动机风扇开/关状态。 模型参数根据特定车辆特性确定，并从车辆收集数据。 从物理测量，车辆参数和前一次的增压空气温度以规定的预定间隔，模型预测增压空气温度。 可以基于车辆开启时可用的温度传感器读数和存储充电温度的数据以及在发动机关闭之前的所有测量温度读数来获得车辆接通时的初始增压空气温度的估计 。
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8.发明授权Real-time misfire detection for automobile engines with medium data rate crankshaft sampling 失效具有中等数据速率曲轴采样的汽车发动机的实时失火检测
公开(公告)号：US5862507A
公开(公告)日：1999-01-19
申请号：US835393
申请日：1997-04-07
申请人： Zhijian James Wu , Anson Lee
发明人： Zhijian James Wu , Anson Lee
CPC分类号： G01M15/11 , F02D41/1498 , F02D2041/288 , F02D2200/1015 , F02D2250/12
摘要： A method and system for detecting engine misfire in an internal combustion engine. A data signal containing a plurality of groups of data points generated from sampling crankshaft rotational displacement over three predetermined angular sampling windows is generated. Each of the plurality of groups of sampled data points represents a cylinder firing event. The data signal is conditioned, and the plurality of groups of sampled data points are mapped into single misfire detection data points. The mapped single misfire detection points are then compared to a misfire detection dynamic threshold, and a misfire detection signal is output if the misfire detection points fall outside the dynamic threshold. The misfire detection system achieves high degree of accuracy through a multi-stage signal conditioning, multi-rate signal processing and statistical decision technology and a mixed size of window sampling strategy, and is capable of being installed on a large scale in motor vehicles through use of existing onboard automotive microcontroller technology.
摘要翻译： 一种用于检测内燃机中发动机失火的方法和系统。 产生包含从三个预定角度采样窗口上取样曲轴旋转位移产生的多组数据点的数据信号。 多组采样数据点中的每一组表示气缸点火事件。 对数据信号进行调节，并将多组采样数据点映射到单个失火检测数据点。 然后将映射的单个失火检测点与失火检测动态阈值进行比较，并且如果失火检测点落在动态阈值之外，则输出失火检测信号。 失火检测系统通过多级信号调理，多速率信号处理和统计决策技术和窗口采样策略的混合大小实现了高度的准确性，并且能够通过使用大规模安装在机动车辆上 现有的车载微控制器技术。
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9.发明授权公开(公告)号：US09178383B2
公开(公告)日：2015-11-03
申请号：US13356784
申请日：2012-01-24
CPC分类号： B60R16/03 , G05F3/08 , H02J1/10 , H02J3/02 , H02J7/14 , H02J7/1423 , H02J7/1461 , H02J2007/143 , H02P9/02 , Y02E10/763 , Y02T10/7005
摘要： An electrical system for an automotive vehicle has a plurality of electrical generating machines having field windings energized by pulse width modulated drive signals generated by an external electronic voltage regulator. The pulse width modulated drive signals have a duty cycle determined by the electronic voltage regulator. A controller selects one of electrical generating machines to evaluate for failure and evaluates that electrical generating machine for failure by causing the PWM drive signal for the field windings of that electrical generating machine to be disabled. The controller then determines that this electrical generating machine has failed if the duty cycle for the PWM drive signals has then not been increased by the electronic voltage regulator by a pre-determined amount. The electrical generating machines are either generators or alternators. In an aspect, the PWM drive signals for the plurality of electrical generating machines are out of phase with each other.
摘要翻译： 用于机动车辆的电气系统具有多个发电机，其具有通过由外部电子电压调节器产生的脉宽调制驱动信号而激励的励磁绕组。 脉宽调制驱动信号具有由电子电压调节器确定的占空比。 控制器选择发电机之一以评估故障，并通过使该发电机的励磁绕组的PWM驱动信号被禁用来评估发电机故障。 然后如果PWM驱动信号的占空比没有被电子电压调节器增加预定量，则控制器确定该发电机已经失败。 发电机是发电机或交流发电机。 在一方面，用于多个发电机的PWM驱动信号彼此不同相。
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10.发明授权公开(公告)号：US09783143B2
公开(公告)日：2017-10-10
申请号：US14838632
申请日：2015-08-28
申请人： Jan S Pyko , Michael J Pawlukiewicz , Michael E List , Anson Lee
发明人： Jan S Pyko , Michael J Pawlukiewicz , Michael E List , Anson Lee
CPC分类号： B60R16/03 , G05F3/08 , H02J1/10 , H02J3/02 , H02J7/14 , H02J7/1423 , H02J7/1461 , H02J2007/143 , H02P9/02 , Y02E10/763 , Y02T10/7005
摘要： An electrical system for an automotive vehicle has a plurality of electrical generating machines having field windings energized by pulse width modulated drive signals generated by an external electronic voltage regulator. The pulse width modulated drive signals have a duty cycle determined by the electronic voltage regulator. A controller selects one of electrical generating machines to evaluate for failure and evaluates that electrical generating machine for failure by causing the PWM drive signal for the field windings of that electrical generating machine to be disabled. The controller then determines that this electrical generating machine has failed if the duty cycle for the PWM drive signals has then not been increased by the electronic voltage regulator by a pre-determined amount. The electrical generating machines are either generators or alternators. In an aspect, the PWM drive signals for the plurality of electrical generating machines are out of phase with each other.
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